PVC plastics products optical brightenr ob

PVC plastics products optical brightenr ob is a kind of plastics additives that can absorb UV light then emit visible blue light to reduce the yellowish and make the products whiter.

Optical Brightener OB mainly used in whitening of thermoplastic, polyvinyl chloride(PVC), polypropylene(PP), polyester fiber, paint and ink, etc.

Chemical Name 2,5'-Bis[2-(5-tert-buty l-2 benzoxazoly)thiophene
CAS No. 7128-64-5
C.I. No. 184
Structural Formula
Molecular Formula C26H26N2O2N2
Molecular Weight 430 
Technical Index Appearance:slight greenish yellow powder 
Melting Point:200-202°C 
Purity:≥99% 
Uses Mainly be used in whitening of thermoplastic, polyvinyl chloride(PVC), polypropylene(PP), polyester fiber, paint and ink, etc.
Pplastics:about 200g per 1000kgs
Packing 10kg/25kg per fiber drum